ITC credit taken on Book Entry. How to deal now?

A client (recepient) has availed ITC in GSTR3B for october, on the basis of book entry for the invoice of October. Now Supplier has actually filed Gstr 1for quarter ending december and shown the said invoice. Therefore Such itc is now reflected in recepients Gstr2A & 2B. So what to do now by recepient in gstr 3B of December.